Apparatus for displaying stereoscopic views



(No Model.) 4 Sheets-Sheet 1.

. 0. O. BISHOP. APPARATUS FOR DISPLAYING STBREOSGOPIO VIEWS.

No, 427,727. Patented May 18, 1890. a

(NoModeL) 4Shets-Sheet 2. 0. 0. BISHOP. v

APPARATUS FOR DISPLAYING STBREOSOOPIC VIEWS; 7 No. 427,727.

Patented May 13; 1890.

4'Sheets-Sheet 4.

(No Model.) I

O U BISHOP APPARATUS FOR DISPLAYING STEREOSGOPIG VIEWS.

Patented May 13, 1890.

UNITED STATES PATENT FFICF.

CHARLES QBISHOP, OF NASHVILLE, TENNESSEE.

'sP'EcIFIoA'rIoN forming part of Letters FatentNo. 427,727, dated May 13, 1890. Application filed November 13, 1339. $eria1 No. 330,217. (No model.)

arrangement of the several parts thereof,

which will be more fully hereinafter described,..and definitely pointed out in the claims.

The object ofmy invention is to provide an apparatus which will be actuated and controlldby the deposition of a weight or metal check--such as a coi nand also'to illuminate thepic'ture by artificial light supplied from suitable means located Within the casing. l

attain this object by the construction illustrated in [the accompanying drawings, wherein like letters of reference indicate corresponding parts in the several views, and in which- Figure 1 is a top plan View with the cover removed. Fig. 2 is a transverse vertical section on the line a; a: of Fig. 1. Fig. 3 isa perspective view of the rear of the mechanism. Fig. 4. is a detail View of the lens and its'supported portion of the casing. Fig. 5 is a perspective view of the card-holding frame. Fig.

6 is a perspective View of one of thecard clamps. Fig. 7 is a perspective View of the hopper, showing in dotted lines the position assumed when tilted; and Fig. 8 is a perspective view of the end of the actuatedlever with the hopper removedl Fig. 9 isa perspective view of the case.

In the drawings, A represents the casing, having lid or door B, and formed substantially rectangular, with a slanting top. \VIthin the casing to one side of its center are secured,

- two vertical tapering standards.0, formed with hearings in their faces near their ends.

frame of the clock mechanism.

In these bearings are journaled shafts D D, rectangular in cross-section between the standards. Adjacent to the ends of these shafts are placed guide collars or pins cl,

for purposes hereinafter stated. Over the ends of the shafts D D are placed endless belts E, constructed of any suitable material, such as leather or Webbing. These belts are held on the ends of the shafts by the pins (Z and the standards. On these belts are secured.

the card clamps F, which, as shown in Fig. 6, are formed of pieces of metal bent to partly engircle the belts, and of a width substantia 1y equal. to the 'fiat faces of the shafts. From the outer ends of these clamps project vertically an arm formed with two lateral Win gs f between which the edges of the cards are placed. These clamps are united or permanently secured to the-bands, and are united in pairs bya frame or wire F, attached totheir upper edges and extending out sufliciently to permit a card to be placed between, and they are then united above the cards. At

the center of the cross-piece of the frame F, I secure a downwardly-projecting clamp f having two curved lips, between which the edge of the. card is placed. The card is thus held rigidly in place 7 at all times in its circuit around the shafts. The construction of the clamps F and theirpositions on the belts form substantially-a sprocket-chain, the

rectan ular shaft carr in the belts as the shafts rotate. In rotating these shafts 1 cmploy a train of gears or clock .niechanisin G, which I support on a suitable bracket in the upper portion of the interior of the casing. Adjacent and slightly in the rear of the stand ards, on the innerend of the upper shaft 1)., is keyed a gear wheel II, which meshes with a broken gear-wheel H on the outside of the This wheel H is formed withteeth on part of its periphery only, which are in number suflicient to rotate the wheel II a distance to expose each picture at intervals suiiicient for a complete inspection thereof. As the teeth on wheel H engage the .wheel H, it carries the previously-oxposcd picture down and exposes the followin adjacent card. The broken or toothless surface of the mechanism, I employ a peculiar construction,

which I will now-proceed to describe. Atthe upper rear end of the clock-mechanism frame and engaging with the train of wheels I journal a lateral shaft J, having a barrel-rack j on one end and a friction-disk K on its opposite end,which is rotated by the gear'G of the train of gears.

L is a shaft extending across the frame ofthe mechanism and journaled thereon. From this shaft there extends upwardly a curved I arm L, bending around the periphery of the friction-Wheel K and above it. It is secured rigidly with the shaft and moves with the same. To normally hold the arm L against the disk K, a tension-spring M is employed, which is secured to the upper end of the arm and to an adjusting-screw m, which extends through ablock secured to the casing. By this means the tension or pressure of the arm on the disk may be regulated. To form a more complete contact with disk and arm, so

that the mechanism will move quickly, re-

spon d to the pressure of the spring, and there'- by stop the mechanism, a rubber block Z is attached to the disk.

To release the disk K and start the operating mechanism, I extend a long-lever-arm0 from the outer end of the shaft L across the casing to a'point near the front. This lever is rigidly keyed to a shaft L, and owing to its length is ,very sensitive and responds quickly to the slightest pressure placed on its free end. The end of this lever is formed with a T-head, with projectionsor cars 0 extended out from its center; Between these ears I place a hopper or receptacle P, which is pivoted to the upper end of the ears near its bottom at a pointslightly in advance of its Iongitudinal center, which permits the hopper orreceptacleto oscillate. This hopper is tilted after the coin is deposited by a trigger or trip-arm 0', attached to one of the cardframes. This trip consists of a wire or metal arm rigidly secured to the arm and projecting out to a point where it will contact with the outer en d of hopper, or rock when occasion requires, the tongue 0' limiting its movement.

Q represents a coin or weight chute extending from the top down to a position adjacent to the hopper, and communicates with a slot in the casing, so that the coins are always deposited in the hopper. In the upper forward corner'of the casing is placed a bracket R, on which a light of any desired form, preferably an incandescent electric light, is placed. The position of this light causes the rays to strike directly on the exposed card or picture.

S represents'the lenses, which are. secured in a suitable eye-piece mounted on rods 8, extending through the casing and adapted drawn back. stopped, the trigger being immediately under to be moved out and in to regulate the focus.

A shield or casing S is secured to the casing in which the eye-piece works.

In the ower part of the casing, near the front, I place a drawer. to receive the coin or weight.

The operation of the above-described apparatus is as follows:' The coin is placed in the chute and deposited in the hopper, the weight 'of which overcomes the tension of the'spring and releases the friction-disk, permitting the endless belts with. the views to be carried around, the construction of the wheel H causing the-views to be periodically displayed.

As the trigger'or trip comes in contact with the hopper, it forces it down; displacing the coin or weight and permitting the lever to be The mechanism is thereby the hopper, so that the entire list-of views is disclosed during the next, operation.

I am aware that many minor changesin the construction and arrangement of the parts of my invention can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters 1 Patent, is-- 1. In an-apparatus'for displaying views, the

combination, with a clock mechanism and a view-carrier, of a broken or segmental gearwheel in operative contact with the clock mechanism and arranged toaperiodicitllyengage withthe view-carrier to move the same, a lever, and, a trip on the carrier for controlling the movement of the mechanism, substantially as described.- I

2. In an apparatus for displaying views, the

'combination, with a view-carrier and mechanism' for operating the same, of a lever on the frame of the driving mechanism havinga curved arm extending out from it's fulcrumed end at or about right angles, a contact-blockon the arm, aspring connectedwith its upper end, and a friction-wheel in operative contact with the driving mechanism against -Which the arm is normallyheld, substantially as described.

'3. In an apparatusfor displaying views, a view-carrier consisting of two endless belts having frames thereon forholding the views, mechanism for operating the carrier, a lever for controllingthe movement of the mechanism, and a trip onone of the frames engaging with the lever to stop the operating mechanism, substantially as described:

4. The lever having upturned ears'aud a tongue 0 between the ears, andatilting hopper pivotally secured between the ears, incombination with a view-carrier having a trip thereon for tilting the hopper, substantially as described.

5. The combination, with the view-carrier,

of mechanism for operating the same period 5 clock mechanism, of a. sector-wheel interposed ically, a friction-disk, and a. le'venengaging by the'trip .to control the movement of the therewith and with the carrier for stopping mechanism; substantially as described. 1c the mechanism,substantially as described. In testimony whereof I affix my signature 6. The combination'mithaview-carrier'and in presence of two witnesses.

v l f CHARLES C. BISHOP.

between the same for periodically operating Witnesses:- I the carrier, atrip on the carrier, and ai lever en- FRANK T. HUNTER, gaging with the clock mechanism operated L: S. BACON. 

